Doctor Ishikawa Gen (played by Ken Ishiguro), who returned from Kansas with honors, was hired to enter the Tianzhen Building Hospital, but what caught his eyes was not the scene of doctors saving lives and healing the wounded, but the chaotic scene of doctors on duty being absent and patients being left unattended. What he couldn't stand in particular was that the head surgeon of Tianzhen Building, Sima Etaro (played by Yuji Oda), had no sense of responsibility as a doctor to treat patients with all his strength. Sima would never continue to participate in the rescue work after get off work, but he could rescue the son of a congressman for an objective reward; he had an ambiguous relationship with a medical device businessman and exchanged interests. What annoyed Ishikawa the most was that Sima simply "regarded the patient's life as a straw", and gave up treatment when the patient had even a glimmer of hope of survival. Although Sima's medical skills were superb and highly praised by the hospital's senior management, the two doctors with completely different ideas still had constant conflicts. In this process, the various shady scenes covered by the coats of the angels in white gradually emerged...